we understand that a team of fbi agents has arrived in benghazi and they have begun their investigation to try to determine who was responsible for the attack on the u.s. consulate that killed ambassador stevens and three other americans. we know that they will be sifting through the rubble and ashes at the u.s. consulate and identifying individuals who may have played a role in that assault. we also understand that u.s. intelligence agent sits have deployed their assets across the country to try to pick up any intelligence that can help in that search. all indications right now according to libyan officials is this is a pre-planned attack. they have identified a few individuals. four are in custody of the libyan government. they believe these individuals may have some information that may be of value as to who is responsible for the attack. they also say they have several others under the libyan government surveillance. right now though all fingers are pointing to at least one militant group here that is closely affiliated with or at least inspired by al qaeda. that group though denies